The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2019
Filed:
Apr. 27, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Seiichiro Karita, Saitama, JP;
Shuzo Iwanaga, Kawasaki, JP;
Kazuhiro Yamada, Yokohama, JP;
Takatsuna Aoki, Yokohama, JP;
Shingo Okushima, Kawasaki, JP;
Zentaro Tamenaga, Sagamihara, JP;
Yumi Komamiya, Kawasaki, JP;
Noriyasu Nagai, Tokyo, JP;
Tatsurou Mori, Yokohama, JP;
Yoshiyuki Nakagawa, Kawasaki, JP;
Akira Yamamoto, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.